Marshall Goldsmith was a pioneer of 360 Degree Feedback as a leadership tool. You see leaders, like you, are often so powerful in casting your spell, your message, or your vision upon those who work for you or those closest to you, that it is not in their interest to challenge you. They may be frightened to do so, or they may feel that their job or contract with you is at risk in challenging the status quo. So long as leaders exist in this world, so will this problem. So, why do you think the likes of Jack Welch hires people like Marshall Goldsmith? Because no one else has the guts to tell him what he needs to hear. The Welches of this world know this, and hire accordingly.
Listen to this story of woe to go from one of my clients.